According to Inside Facebook, Facebook is currently testing a translate button for international users to getting around the language barrier. Facebook will provide a button to translate users' comments on the fly.

Inside Facebook reports that only a few languages, including Spanish, French, Hebrew, and Chinese, are currently supported, but that's just the start. The benefit of such a feature is pretty obvious; the people you couldn't talk to because the spoke another language can now be brought into the conversation. Cool. You potentially have the opportunity to broaden your circle of friends. But what about the privacy issue? Supposing you don't want people to translate the conversation you have with family members in your mother tongue? No word on that just yet. Hopefully Facebook gets it right. [Inside Facebook]